Eu^<2+>添加CaAl_2S_4を用いた高純度緑色EL素子の作製(発光型・非発光型ディスプレイ合同研究会)

小野 義明; 川西 光宏; 三浦 登; 松本 皓永; 中野 鐐太郎

doi:10.11485/itetr.27.4.0_53

27.4

Session ID : IDY2003-14

DOI https://doi.org/10.11485/itetr.27.4.0_53

Conference information

High color purity green electroluminescent devices used Eu^<2+> doped CaAl_2S_4

Yoshiaki Ono, Mitsuhiro Kawanishi, Noboru Miura, Hironaga Matsumoto, Ryotaro Nakano

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Keywords: Electroluminescence, Phosphor, CaAl_2S_4:Eu, green emitting, Two target pulse-electron-beam evaporation method

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Abstract

The high Luminance electroluminescent (EL) device having excellent color coordinates were developed. A CaAl_2S_4:Eu phosphor exhibited the purest green photoluminescence among Eu^<2+> ion doped IIa-IIIb_2-S_4 group phosphors. CaAl_2S_4:Eu EL devices were prepared by the two target pulsed-electron-beam evaporation method. The maximum luminance level under 1 kHz sinusoidal wave voltages was over 4,000 cd/m^2. Commission Interantionale de 1'Eclairage (CIE) color coordinates were x=0.121, y=0.670.

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